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Check how long the CentOS system has been running the uptime command
It does not matter how long the system has been running for some people, but it is very important for the server administrator. When running important applications, the server must ensure stable operation f
For some people it doesn't matter how long the system has been running, but this is important information for the server administrator. When running important applications, the server must try to ensure long-running stability, and sometimes even require zero downtime. So how do we know how long the server has been running? Under Linux, we can use the
It does not matter how long the system has been running for some people, but it is very important for the server administrator. When running important applications, the server must ensure stable operation for a long period of time, and sometimes even require zero downtime. So how can we know how long the server has been running?
In Linux, we can use the
#!/bin/bash#author:yanconggod#date:2017-01-19#version:1.0# using uptime command to monitor system load postfix_path= "/usr /sbin/postfix "mailx_path="/usr/bin/mailx "email=" [emailprotected] "# get native IP address ip= ' IFCONFIGNBSP;ENP2S0 |grep ' \binet\b ' |awk ' {print$2} ' # formatted time display date= ' date ' +%y-%m-%d%h:%m ' # Declare integer variable declare-icpu_numloadsave# get current host CPU
Sshpass ToolsSshpass can install yum or download source package-P: Specify the password for SSH-O Stricthostkeychecking=no avoid a public key check for the first logon.#!/bin/bash/usr/bin/sshpass-p linux ssh-o stricthostkeychecking=no [email protected] uptime|grep up |awk ' {print $} ' |se d ' s/,//'This article is from the "Boyhack" blog, make sure to keep this source http://461205160.blog.51cto.com/274918
CPUs is 4 and the load average is 8 or 10, the result is more than 2 points.You can use uptime to determine whether a performance problem occurs on the server or on the network. For example, if the Running Performance of a network application is not satisfactory, run uptime to check whether the system load is high. If
Use ten commands to check Linux server performance within one minute
If the load on your Linux Server suddenly surges and an alert message is sent to your mobile phone, how can I find out the Linux performance problem in the shortest time? Let's take a look at this blog post by the Netflix performance engineering team and see that they use ten commands to diagnos
command contains the contents of the check for several previous commands. such as system load conditions (uptime), System memory usage (free), System CPU usage (VMSTAT), and so on. Therefore, this command allows you to view the source of the system load in a relatively comprehensive way. At the same time, the top
Key 10 commands to check Linux server performanceOverviewYou can get a general idea of system resource usage within 1 minutes by executing the following command.
Uptime
DMESG | Tail
Vmstat 1
Mpstat-p all 1
Pidstat 1
IOSTAT-XZ 1
Free-m
Sar-n DEV 1
Sar-n tcp,etcp 1
Top
So
kworker/u256:0 8 Root 0 0 0 0 S 0.0 0.0 2:38.05 rcu_schedThe top command contains the contents of the check for several previous commands. such as system load conditions (uptime), System memory usage (free), System CPU usage (VMSTAT), and so on. Therefore, this command allows you to view the source of the system load
contains the contents of the check for several previous commands. such as system load conditions (uptime), System memory usage (free), System CPU usage (VMSTAT), and so on. Therefore, this command allows you to view the source of the system load in a relatively comprehensive way. At the same time, the top command supp
Cancels the transaction and discards all commands within the transaction block
Exec
Execute commands within all transaction blocks
MULTI
Mark the beginning of a transaction block
Unwatch
Suppress watch command for all key monitoring
WATCH
Monitor one (or more) key if this (or these) key is changed by another command before
Cancels the transaction and discards all commands within the transaction block
Exec
Execute commands within all transaction blocks
MULTI
Mark the beginning of a transaction block
Unwatch
Suppress watch command for all key monitoring
WATCH
Monitor one (or more) key if this (or these) key is changed by another command before
contains the contents of the check for several previous commands. such as system load conditions (uptime), System memory usage (free), System CPU usage (VMSTAT), and so on. Therefore, this command allows you to view the source of the system load in a relatively comprehensive way. At the same time, the top command supp
If your Linux server bursts into sudden load, how can you pinpoint Linux performance problems in the shortest possible time?You can get a general idea of system resource usage within 1 minutes by executing the following command.
Uptime
DMESG | Tail
Vmstat 1
Mpstat-p all 1
Pidstat 1
IOSTAT-XZ 1
Free-m
Sar-n DEV 1
Sar-n tcp,
This article is selected from the "Linux Core application command speed check" book
former say
The graphical interface of the current Linux operating system is already quite excellent. You can use a variety of graphics management programs on Linux to change different desktop patterns or function menus, such as GNOME and KDE, which are not the same as the Windows operating system's single interface. But L
You're free to collect some git commands from the Web, sort it out.1. Common git commands
Command
Brief Description
Special Notes
git add
Add to Staging Area
Git add–interactive
Interactive add
git apply
Apply Patches
git am
Apply Message Format Patches
Git annotate
Comment File line submission informat
kworker/u256:0 8 Root 0 0 0 0 S 0.0 0.0 2:38.05 rcu_schedThe top command contains the contents of the check for several previous commands. such as system load conditions (uptime), System memory usage (free), System CPU usage (VMSTAT), and so on. Therefore, this command allows you to view the source of the system load
cancel the check-out. Msdn describes the undo command as follows:
UndoCommand to check whether the files with undo pending edits have been modified on the disk. If the modification is detected, the undo command without/noprompt will display a prompt asking whether to continue undo the change. Yes, no, or all ".
UndoCo
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